Home / 379,125.51-523,191.20-209,359.59

Finding the Fourth Proportional to 379,125.51, 523,191.20 and 209,359.59

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Solution

The fourth proportional to 379,125.51, 523,191.20 and 209,359.59 is: 288,915.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,125.51 : 523,191.20 = 209,359.59 : x
  2. Step 2: Convert to fraction form
    379,125.51/523,191.20 = 209,359.59/x
  3. Step 3: Cross multiply
    379,125.51x = 523,191.20 × 209,359.59
  4. Step 4: Simplify right side
    379,125.51x = 109,535,094,076.81
  5. Step 5: Solve for x
    x = 109,535,094,076.81/379,125.51
  6. Step 6: Final answer
    x = 288,915.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.